2721500223 has 16 divisors (see below), whose sum is σ = 3908993760. Its totient is φ = 1674255744.

The previous prime is 2721500209. The next prime is 2721500227. The reversal of 2721500223 is 3220051272.

It is a happy number.

It is a Cunningham number, because it is equal to 52168²-1.

It is not a de Polignac number, because 2721500223 - 2¹⁰ = 2721499199 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2721500193 and 2721500202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2721500227) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 147813 + ... + 165201.

It is an arithmetic number, because the mean of its divisors is an integer number (244312110).

Almost surely, 2^2721500223 is an apocalyptic number.

2721500223 is a deficient number, since it is larger than the sum of its proper divisors (1187493537).

2721500223 is a wasteful number, since it uses less digits than its factorization.

2721500223 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21418.

The product of its (nonzero) digits is 1680, while the sum is 24.

The square root of 2721500223 is about 52167.9999904156. Note that the first 5 decimals coincide. The cubic root of 2721500223 is about 1396.1630008038.

Adding to 2721500223 its reverse (3220051272), we get a palindrome (5941551495).

The spelling of 2721500223 in words is "two billion, seven hundred twenty-one million, five hundred thousand, two hundred twenty-three".